* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
img {
  width: 100%;
}
html,
body,
#app {
  width: 100%;
  height: 100%;
}
.app {
  height: 100%;
  display: flex;
  flex-direction: column;
}
.main {
  flex: 1;
  overflow: auto;
  padding: 0 0 8vh 0;
}
